johnson



{sheets-sheet '1.

(No Model.) I

J. B. JOHNSON.

BALING PRESS;

No. 361,764. Patented Apr. 26, 1887.

llllll n WITNESSES. IJV'TOR.

(No Model.) 2 SheetsS heet- 2.

J. B. JOHNSON.

BALING PRESS.

No. 361,764. Patented Apr. 26, 1887.

WJWM

UNITED STATES V PATENT OFFICE.

JESSE B. JOHNSON, OF INDIANAPOLIS, INDIANA.

BALlNG-PRESS.

SPECIFICATION forming part of Letters Patent No. 361,764, dated April26, 1887.

To all whom it may concern.-

Be it known that I, Jnssn B. J OHNSON, of the city of Indianapolis,county of Marion, and State of Indiana, have invented certain new anduseful Improvements inBaling-Presses, of which the following is aspecification.-

The object of my said invention is to produce an improved gear by whicha constantlylncreaslng. power may be communicated to a plunger, piston,or such like part of a machine as it nears the end of its stroke.

It consists, essentially, of a rack bar so mounted as to be capable of avertical as well as horizontal movement and connected to such plunger orpiston, and a cogged cam or eccentric, which is adapted to engage withsaid rack-bar, commencing at the point farthest from the shaft, thepoint of engagement gradually approaching said shaft as the stroke ormovement progresses, as will be hereinafter more particularly describedand claimed.

Referring to the accompanying drawings, which are made a part hereof,and on which similar letters of reference indicate similar parts, Figurel is a top or-plan view of mechanism embodying my said invention; Fig.2, a side elevation of the same, the frame-work being shown in section;and Fig. 3 asimilar view to Fig. 2 of an alternate construction.

In said drawings, the portions marked A rep- -resent a frame-work; B,the main shaft of the mechanism; G, the eccentric cogged segment; D, therack-bar; E, camarms for bringing the rack-bar into proper position toengage with the cogged segment, andF the plunger or piston which isdirectly operated upon.

The frame-work A is of course any suitable frame-work inwhich themachinery may be mounted, and is usually an extension of the frame-workof the press or other machine in connection with which this mechanism isused.

The main shaftB carries the eccentric cogged segment 0, the curved armsE, and usually a spur gear-wheel, B, through which said shaft is drivenfrom a similar gear-wheel, b, on a driving-shaft, B, the latter beingcommonly driven by a belt running to the pulley I). This mechanism,however, is of any ordinary and well-known character, which maybe variedat pleasure, and this invention does not de- Application filed June 26,1886. Serial No. 206,288. (No model.)

pend thereon in any manner, as the shaftB may be driven by any means ormechanism desired.

'The cogged segment G is, as before stated, set eccentrically to theshaft B, and is securely mounted thereon. It is so formed that it onlyoperates while the cogs are in engagement with the rack-bar, thuspermittingsaid rack-bar a return movement as soon as said cogged segmenthas escaped fromengageinent therewith.

The rack-bar D is, as before stated, so mounted as to be capable ofrising as well as moving forward. In the principal drawings the means ofdoing this is an inclined surface formed on the under side of the rearportion of said bar, which rests on and moves over a truck or roller, a,mounted in a bearing, A, on the frame A. The incline is just sufficientto keep the cogs of the rack-bar in engagement with the cogs on thesegment 0, and thus as said segment revolves it drives said rackbar'andthe plunger or piston F (to which it is connected) forward with anever-increasing power, subjecting whatever is being operated upon to aconstantly-increasing pressure.

In Fig. 3 the rack bar D* is shown as mounted on swinging links D Dwhich are secured to said rack-bar by pivots d d and to bearings on theframe-work by pivots a a As it is necessary that the rack-bar shouldtravel a greater distance than the length of the cogged surface on thesegment 0, and it being desirable in this construction that the rackbarshould travel horizontally until it reaches the point where it begins toengage with said segment, the upper ends of these swinging links areslotted for a distance equal to that which the rack-bar travels beforesuch engagement with the toothed segment 0. The rackbar is also dividedinto two parts pivoted together, and one portion is in the form of aconnecting-rod, as shown.

It will be seen that as the rack-bar is driven forward by the coggedsegment 0 it must also rise correspondingly, and thus, notwithstandingthe eccentric character of said segment, said rack-bar and said segmentwill be kept in engagement for the whole length of the cogged portion,while, as before stated, owing to the fact that the cogs 011 the segmentare nearer progresses.

the shaft during the latter portion of its stroke, O

the power is materially increased as said stroke The arms E are alsosecured to the shaft B and extend down and engage with projections onthe rack-bar D, which are preferabl y in the form of anti-frictionrollers (Z, and these parts are so adjusted that the rack-bar will bebrought to just that point where the first tooth of the cogged segmentwill engage with the first tooth of the rack-bar as the parts arrive intheir movements at the positions shown in the drawings.

The plunger or piston F is ormay be of any usual or desiredconstruction. As shown, it is of a form commonly employed in presses forpressing hay, cotton, excelsior, or such other fibrous matter intobales; and my invention is particularly designed for and is peculiarlyadapted to such presses, although I desire to be understood as claimingthe mechanism or mechanical movement herein described for any purpose towhich it may be applied.

As a means of strengthening the mechanism at the point where thegreatest strain comes thereon just before the cogs on the segment 0escape from the cogs on the rack-bar D, Ihave inserted in said rack-baran extended cog, d

preferably formed of tempered steel, and have secured to the sides ofthe final cog on the segment 0 supplemental cogs, 0, also preferablyformed of tempered steel, which engage with the extended cog d on therack-bar, and thus the danger of breakage at the time the final cogon-the segment slips from its engagement with the cog on the rack-bar isreduced to a minimum. This final cog is also surrounded by a casing,(see Fig. 1,) which enables the space behind it to serve as an oil-box,and thus said final cog is always kept lubricated by keeping oil in thisbox.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is-

of said segment or rack being also formed of greatly increased strength,whereby said parts are enabled to successfully resist the great strainthrown upon said final cogs at the terr mination of each stroke,substantially as setv forth.

2. The combination of the shaft B, means for driving the same, thetoothed segment G, mounted on said shaft, the rack-bar D, rest1 ng andadapted to slide on the bearing a, an 1 nclined surface being formeddirectly under said rack, and the arm E, secured to the shaft B andarranged to operate against a bearing on said rack-bar D, allsubstantially as set forth.

3. The combination of the eccentrically-set cogged segment 0, therack-bar D, adapted to engage therewith and having contact poln't orprojection 01, and the arm E, secured to the same shaft as the segment0, for bringing said rack-bar to the proper position to engage with saidsegment, substantially as set forth.

4. The combination, in a baling-press, of the eccentrically-set coggedsegment 0, the last cog of which is formed of greater strength, therack-bar D, with which said segment engages, also formed with anextended or re-enforced cog, d and means for raising said rack-bar assaid eccentrically=set segment revolves, substantially as set forth.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 18th day of June, A. D. 1886.

JESSE I3. JOHNSON. [L 5.]

In presence of- O. BRADFORD, OHARLEs L. THURBER.

